THE FAMILIES AND GENERA OF BATS. 
181 
1865. Vespertiliones Peters, Monatsber, k. preuss. Akad. Wissensch., Ber- 
lin, p. 258 (part; ‘ Spectrellum’=Natalus , and Nyctiellus) . 
1866. V espertilionidw (part; Natalinia, Nycticellina, and Furipterina ) 
Gray, Ann. and Mag. Nat. Hist., 3d ser., XVII, p. 91, February, 1866. 
1866. Noctilionidw (part; Spectrellina) Gray% Ann. and Mag. Nat. Hist., 
3d ser., XVII, p. 93. 
1870. Vespertiliones (part; Vespertiliones, part) Fitzinger, Sitz. ber, kais. 
Akad. Wissensch., Math. Naturwissensck. Classe., Wien, LXII, Abtb. 
I, p. 66. 
1875. V espertilionidce (part; Miniopteri, part) Dobson, Ann. and Mag. Nat. 
Hist., 4th ser., XVI, p. 349, November, 1875. 
1878. V espertilionidw (part; Miniopteri, part) Dobson, Catal. Cbiropt. 
Brit. Mus., p. 170. 
1886. V espertilionidw (part; Miniopteri, part) Gill, Standard Natural His- 
tory, V, p. 166. 
1891. V espertilionidw (part; Miniopterine division, part) Flower and 
Lydekker, Mammals, living and extinct, p. 660. 
1892. Pliyllostomidw (part; NataMnw) Allen, Proc. U. S. National Mu- 
seum, XV, p. 437, October 28, 1892. 
1892. V espertilionidw (part; Natalini, part) Winge, Jordfundne og nule- 
vende Flagermus (Chiroptera) fra Lagoa Santa, Minas Geraes, Bra- 
silien, p. 24. 
1899. Natalidw (part) Miller, Bull. Amer. Mus. Nat. Hist., XII, p. 245, 
December 23, 1899. 
Geographic distribution . — Warmer parts of America north to the 
Bahama Islands and central Mexico. 
Characters . — Humerus with trochiter nearly as large as trochin 
and projecting noticeably farther beyond head, its surface of articu- 
lation with scapula nearly half as large as glenoid fossa and very 
definitely outlined, epitrochlea Avell developed, but short and thick, 
with broad spinous process, capitellum distinctly out of Jine with 
shaft; second manal digit with fully developed metacarpal but no 
phalanges; third finger with two phalanges; shoulder girdle normal 
in structure, but presternum relatively large and strong, its width 
equal to length of presternum and mesosternum together, its keel 
slanting backward; mesosternum very narrow, its keel much higher 
than its width posteriorly; xiphisternum scarcely longer than broad, 
its keel low but distinct; foot normal; fibula thread-like, usually 
cartilaginous at its upper extremity, which extends to head of tibia; 
pelvijs essentially normal, but ilia unusually expanded laterally and 
dorsal and ventral profiles of ossa innominata more nearly parallel 
than in any other bats except the Rhinolophidae and Hipposideridae, 
sacrum with boundaries of vertebrae nearly or quite effaced, though 
general form of bone not peculiar; vertebrae from last dorsal to 
antepenultimate lumbar fused into a solid, laterally compressed mass 
from which all boundaries of the original elements are obliterated, 
last two lumbar vertebrae free; skull without postorbital processes; 
premaxillaries complete, the slender palatal branches fused in me- 
dian line, leaving two small, lateral foramina and a slight anterior 
